Shuttle-guard device for shuttles without threading devices for automatic looms



W 25, 30- E. EGLI SHUTTLE GUARD DEVICE FOR SHUTTLES WITHOUT THREADINGDEVICES FOR AUTOMATIC LOOMS Filed Aug. 14, 1929 Z jj Carve/474K lo rduced intothe shuttle-box a sufiiclent extentv i ll? Patented Nov. 25,.1930 i z UNITED STATES ERNST net-I; on

TPATENTOFFIQCE RUTI, swicrznnnann, AssIenoR To tiasesiamm lnam Burr vet;

Mans CASPAB Hoivn'ssnn, or n TIjsw IT znnLANi) 4 Marlo-Looms Applicationfiled August 14., 1929 Serial na saa'mi, and. in Swi zerland s bruar e,192a This invention relates to shuttle guard'devices, more particularlyfor automatic looms for shuttles of the kind not provided with athreading device for checking the shuttle on enteringthe box. A

The known shuttle-guard devices for autog matic looms, generally incombination with guard shears, touchupon the side of the bobbin head ofthe shuttle at the shuttle-point and determine whether the shuttleiisintro to enablethe bobbin-changing mechanism to be set in motion. Thusthe control of the position of the shuttle is only of the one-sidedkind.) Therewith there is no arrangement controlled by the shuttlepenetrating too deeply into the box thus thereis no device for causingan inaccuracy in the position of the shuttleof at the most 1 cmto becompensated by the bobbinybeing pressed by the hani iner upon a slopingsurface in the shuttle so that this wedge-action brings the shuttleintothe correct position. This latter processhas the disadvantage that theharnineris forced and the wooden bobbins inustvbe provided at the headend with a metal coating in order.

to be able to Withstand this treatm'ent. If, in

consequence of the wearing out of the shuttleshuttle co-operates with awedge-piece Inovvner that by the action of this wedg driver, the shuttlegoes still deeper than; the

f 1 admissible amount of 1 cm. into the box, it

may easily lead to the breaking of the hammer. l e V i The shuttle=guarddevice according to the present invention is characterized hereby,

that a transverse opening arrangedon the able backwards and forwards, insuch a nun approved embodiment'of the invention is illustrated? Fig. 1is an elevation of the improved shuttle guard device; Y

Fig; 2 is an end view thereof;

Figs. 3, 4 and 5 are plan views of the deshuttle,such means being shownin two p or1; sit ons; e i

remains on the one hand under the pull of a 'inomentof changing thebobbin. In the p"- "in different positions;if

3 Figs. 6 and 7 are sectional showing," means forhfting' the box tongue;,frond the Fig. 8 is an elevation similarto Fig; 1, but

showing the shuttle in afposition such; that "the wedge shaped piece 3fca nnot enter a the opening of theqshuttle; a 60 Fig. 9isa plan viewcorrespondingtoF-ig. 8,;and

';Fig. 10 a it tastes ar an mg seat Referring to. the drawing,battesidethe bobbin point the, shuttle 1,,which hasjno threading device, isprovided with an opening 2 passing right through Lintofwhich, on the.shuttle correctly enteringflthe shuttle-box (Figs. 1,2 and 5),there cane nter without obstruction, that is without displacement of the shuttle,the wedgeshaped 'endB of a bellcrank lever 6 rotatable about arod t,which spring 5 and thereby is turned away from the {shuttle 1 and on theother handby a r0d6 infiuenced by the weft feeler, the bell-crank lever(i being moved against theshuttle at the sition of] preparation of'thebell-crank lever 6 for the changing of the bobbins the harmine'r latchwhich is connected therewith a'rodfi? is raised into theposition shownin Fig; 2, so that the shuttle box plat A engage in the latch '7 anda 1Bri er 9 f0 t1 nrp e of ianging the bins. H I i I he shu tltleafterentering the shuttle takes upsuch ajposition (Figs, 8, 9 and 'Ith at thewedge-piece cannot, enter into the opening2 of theishuttle 1, then theWedgeQpiece 3 ispressed backby the shuttle and the bell-crank lever, 6is rotated so that the latch 7 is lowered and therewith brought outsidetheipathof swing ofthe push piece S and the change ofthe bobbins is thusinterrupted 10). v 1 N If the position of the Weft shuttle which hasentered deviates only labout 1- cm. to

the left orrightfroln the correct position,

the shuttle.

in the shuttle box (Figs. 3 and 4), the Wedgetongue from the shuttle andto facilitate the piece 3, on the swing to the right of thebelldisplacement of the latter.

crank lever 6 under the influence of the In testimony whereof I haveafiixed my weft-feeler, brings the shuttle 1 into the corsignature.

rect position (Fig. 5) for inserting a fresh bobbin through the hammer 9into the shuttle. In order to facilitate this displacement of theshuttle, the shuttle boX tongue lO (Figs. 6 and 7) is lifted from theshuttle by a roller 11 carried by the lower end of a two-arm lever 1 1,rotatable on the lay 12 about a pivot pin 13 running upon a stationarysliding surface 15.

hat I claim is: V

1. In a shuttle-guard device for shuttles without threading device, forautomatic looms, the combination comprising a shuttle having atransverse-opening, awedge-piece capable of entering into the saidopening when the shuttle is in its correct position and of automaticallycorrecting an error of position of the shuttle of about 1 cm. to theleft or right means connected to the weft-feeler to move the wedge-pieceagainst the shuttle in the moment of changing the bobbin and meansinterposed between the said wedge-piece and the bobbin changing hammerto prevent changing of the bobbins in the event of a greater error ofposition of 2. In a shuttle-guard device for shuttles without threadingdevice, for automatic looms, the combination comprising a shuttle havinga transverse-opening, a wedge-shaped piece capable of entering into thesaid opening when the shuttle is in its correct position and ofautomatically correcting anerror of position of the shuttle of about 1cm. to the left or right, a bell-crank lever carrying the saidwedge-piece and being connected on the one hand to a spring and on theother hand to the Weft-feeler and a mechanical connection between thesaid bell-crank lever and the bobbin changing hammer to interrupt thechange of the bobbins in the event of a greater error of position of theshuttle.

3. In a shuttle-guard device for shuttles without threading device, forautomatic 1: the c ztion comprising a shuttle having a transverse- L a dei c capable ot enter-117w. into tie 0 wt. ositio when the shuttle is ini s of automatically correcting an errorcfposie tion of the shuttle ofabout 1 cm. to the left or right, means connected to the Weft-feeler tomove the Wedge-piece against the shuttle in the moment of changing thebobbin, means interposed between the said wedgepiece and the bobbinchanging hammer to prevent changing of the bobbins in the event of agreater error of position of the shuttle, a two-ar1ned lever pivotallysupported by the lay to swing about a horizontal axis and a stationarycam surface capable of acting upon the said lever to lift theshuttle-box ERNST EGLI.

